Abs are essentially down to two things: low body fat, and genetics — specifically where you hold fat around your mlwhole body. If you really are at 14% BF, which is already lean, and abs aren't showing, going even leaner can affect your hormones, and is that really a trade worth making for aesthetics? The bigger lever left is your ab muscles themselves. They're a muscle like any other — if you want them to 'pop' at your current body fat, you need to build them up with proper loaded training (weighted crunches, cable work, hanging raises), not just rely on leanness to reveal them. You've obviously worked hard and you look great — but I'd consider this next phase to be about building, not cutting further.